Swagelok Company    Solon, OH 44139-3492
May 02, 2013 Suitable for surface and subsea installation, instrumentation, injection, and sampling systems, IPT series medium- and high-pressure products are made standard from cold worked, 316 stainless steel; annealed 316 stainless steel and other corrosion-resistant special alloys are available to meet NACE MR0175/ISO 15156 requirements. Series comprises check valves, trunnion ball valves, relief valves, needle valves, tubing and nipples, coned and thread connections, and coning and threading kits.

Spirax Sarco, Inc.    Blythewood, SC 29016
Apr 18, 2013 Engineered for industrial use, SV418 is rated to ASME and National Board Certified standards for Section VIII service – 750 psi for liquid, air, and gas and 300 psi for steam. Multiple-purpose safety relief valve, available in sizes from ½–3 in., is suited for use where quick, accurate reseating and minimal blow-down (or loss of medium) is important and high capacity is required. Applications include but are not limited to pumping stations, water-works, compressors, and accumulators.

Kingston    Torrance, CA 90501
Feb 28, 2013 Certified for ASME Section VIII Air/Gas/Steam applications, Model 710 integrates fully guided stem and seat pocket for optimal re-seating accuracy. Unit is available in ½–1 in. NPT sizes with ratings of 5–400 psig and -150 to 406°F. In addition to full lift design, unit includes fixed optimized blowdown and stainless steel spring. Typical applications include compressors and dryers, pressure accumulation tanks, piping systems, and industrial/chemical/power plant infrastructure.

Lee Company, The    Westbrook, CT 06498 0424
Aug 27, 2012 Utilizing side inlet flow path to help minimize installation boss size and weight, Hi-Q Pressure Relief Valve is capable of flow rates over 19 gpm. Unit is available in range of cracking pressures from 1,000-5,400 psid. It is designed for nominal pressures up to 5,000 psi and system peak pressures up to 6,750 psi.

Emerson Process Management    Austin, TX 78754
Aug 10, 2012 Used for overpressure protection in natural gas systems, Types EZH, EZR, and FL are available in 1-4 in., 1-8 in., and 1-10 in. sizes, respectively. Pilot-operated relief valves and backpressure regulators offer bubble-tight shut off, precise pressure control, and common body platform. Typical applications include city gate stations, large capacity distribution systems, and power plant feeds.

Fisher Controls Regulator Div., Emerson Process Management    McKinney, TX 75070 8004
Jul 03, 2012 Featuring 1,480 psig inlet/outlet rating, Tartarini(TM) 10 in. Type FL Regulator is suitable for city gate stations, power plant fuel supply, and turbine fuel supply. Modular, pilot-operated unit features no-bleed design, balanced trim, and bubble-tight shut off. Depending on flows and pressure drop, SR II noise attenuation option can reduce noise levels as much as 20 dB (A). Regulator can also be configured as relief valve or backpressure regulator.

Swagelok Company    Solon, OH 44139-3492
May 25, 2011 Used to proportionally vent overpressure, RHPS series PRV model offers NPT female, BSPP female, and BSPP male end connections in ¼, ½, ¾, and 1 in. sizes. Available threaded adapters convert from BSPP to NPT to facilitate product installation. Offering smooth operation, valve has balanced design unaffected by system back pressure up to 50% of valve's set pressure, which is offered in 5 ranges from 145-580 to 4,060-5,800 psig. Flow coefficients (Cv) range from 0.49-4.36.

Groth Corp.    Stafford, TX 77477
Jul 16, 2009 Available in 2 in. (DN 50) through 12 in. (DN 300) flange sizes, 1800 A series full lift type valve is suited for applications requiring low emissions and operation near tank maximum allowable working pressure (MAWP). Modulating valve offers near zero blowdown and reseats at near set pressure, while reducing breathing losses of product in tank.

Lee Company, The    Westbrook, CT 06498 0424
Feb 03, 2009 Weighing only 20 g, Series 375 High Pressure PRI relief valve offers wide range of cracking pressures for 3,000, 4,000 and 5,000 psi systems with system peak pressures up to 6,750 psi. Features included are tungsten carbide ball and 440C CRES seat.

Apollo Valves    Matthews, NC 28105
Sep 30, 2008 With modular check valve design, RP 4A Series reduced pressure principle backflow preventers can fit in tight spaces and under small enclosures. They have 4 top-mounted test cocks and 2 removable captured spring check modules which are independently accessible from top and can be replaced or disassembled for ease of maintenance. Featuring corrosion resistant all-bronze body, units offer maximum working pressure of 175 psi and operating temperature range of 33-140°F.

Maxpro Technologies    Fairview, PA 16415
Mar 26, 2008 Suited for both gas and liquid applications, externally adjustable MT10RV Series protects systems and components against over-pressure. Poppet design allows for chatter-free pressure release and optimal deadband pressure control, while soft seat design provides bubble tight shut-off.

Parker Hannifin Corp., Partek Instrumentation Group    Cleveland, OH 44124
Feb 26, 2008 Available with 0.142 in. flow ports, HPRV, PED-certified valve features captured seat design that is blow-out and chip-resistant, as well as balanced poppet design for operation in back pressures up to 2,000 psig. Range of color-coded springs configure valve for 8 cracking pressure ranges, and fine adjustment is achieved by external nut secured by Tru-Loc mechanism and lock wire. O-ring seals adapt valve for use with different types of media over temperatures from -70 to +400°F.

Air Logic, Div. Fred Knapp Engraving Co., Inc.    Racine, WI 53402
Feb 14, 2008 Designed for precise control in pneumatic circuits, Model R-6100 can be used as relay valve to sequence specific signal operation, or as relief valve to limit pressure. Fixed or adjustable pressure settings are available. To adjust valve, user turns adjusting screw clockwise to reach zero adjustment, then turns adjusting screw counterclockwise to desired relieving or sequencing pressure.

Tyco International (US) Inc.    Princeton, NJ 08540
Jun 14, 2007 Certified under requirements of ASME Code Section I, pilot-operated Series 1500 is designed specifically for overpressure protection of economizers in fossil-fired power plants. All-plastic, soft seat valve operates as non-flowing modulating pilot, opens in proportion to relief demand, and is suitable for hot water, flashing water, and steam service. With no elastomer seats or seals, unit handles temperatures from -65 to 515°F and set pressure range of 15-6,170 psig.

CIRCOR Tech    Spartanburg, SC 29305
Jun 01, 2005 Series R6000 includes low-pressure models from 5–550 psig and high-pressure versions from 150–6,000 psig. Both feature raised seal lip that minimizes contact with seat, eliminating friction and preventing O-ring overstressing. Frictionless poppets ensure consistency of cracking and reseat pressures. High-pressure models are equipped with Delta stem seal, while low-pressure models have encapsulated seat seal. Orifice sizes include 0.082, 0.094, and 0.188 in.

Sauer-Danfoss    Ames, IA 50010
May 10, 2005 Normally closed, electro-proportional Model PRV controls pressure proportional to valve input signal, allowing operator to control pressure in hydraulic systems. Rated for pressures to 3,600 psi, unit fits 10-2 and 12-2 cavities with flow capability of 21 and 50 gpm, respectively. Four-way, 3-position Model PSV controls output flow proportional to electrical input. Rated for flows from 0-5.7 gpm, unit fits 10-4 cavity and handles pressures to 3,600 psi.

Spence Engineering Co., Inc.    Walden, NY 12586-0230
Feb 01, 2005 Safety Relief Valves are available in cast iron, bronze, stainless steel, and aluminum in sizes from ½ x ¾ in. to 6 x 8 in., for pressures up to 900 psig. Rugged construction and dual ring control provide dependable pop action, seat tightness, and repeatability. Valves meet ASME Sections I, IV, and VIII, API 527, and are also PED and TUV certified. Applications include steam boilers, pressure reducing stations, pumps, tanks, and cryogenic systems.

Asahi/America    Malden, MA 02148
Dec 16, 2004 Designed with PTFE bellows stem seal, Type E Pressure Relief Valve is available with PVC, PP, PVDF, or PTFE body materials and EPDM, FKM, or PTFE encapsulated FKM o-ring seals. Valve, available in ½â€“4 in. sizes, has no metal-to-media contact and is corrosion-resistant. Drilled to ANSI B16.5 bolt pattern, product can be installed in thermoplastic piping and metal pipelines. It is suited for use in chemical processing and wastewater treatment.

Plast-O-Matic Valves Inc.    Cedar Grove, NJ 07009
Aug 09, 2004 Teflon® Diaphragm Relief Valve features thermoplastic body with intrinsic flange, eliminating piping nipples and other threaded connections. Teflon® diaphragm and plastic body combine to provide non-leaching, contamination-free relief/by-pass valve. Flange connections are available in Teflon® PTFE, Kynar PVDF, and natural, unpigmented polypropylene.

Spence Engineering Co., Inc.    Walden, NY 12586-0230
Jul 21, 2004 Figure 31 Bronze Series meets ASME Section I and VIII Code for steam, air, and nonhazardous gas service. Available in sizes ½ x ¾ in. through 2½ x 2½ in., for temperatures from –20 to +406°F saturated steam, valves are top guided with full nozzle for optimum flow. They feature unitized bonnet/base design and dual ring control. Single cap and lifting lever permits manual valve opening, for testing with little force required.